Article | 12. 2014 Vol. 32, Issue. 6
Photosynthesis, Shoot Growth and Fruit Quality in ‘Fuji’/M.9 Mature Apple Trees in Response to Prohexadione-calcium Treatments

Department of Horticulture, Daegu University1
Institute of Life and Environment, Daegu University2
Apple Research Station, National Institute of Horticultural & Herbal Science, Rural Development Administration3
Namhae Sub-Station, National Institute of Horticultural & Herbal Science, Rural Development Administration4
Department of Horticultural Science, Kyungpook National University5

2014.12. 762:770


This study was conducted to elucidate the influence of prohexadione-calcium (Pro-Ca) application on shoot growth and fruit quality in ‘Fuji’/M.9 mature apple trees. Pro-Ca was applied at concentrations ranging from 100 to 400 mg・L-1 one time at petal fall (PF; 5-10 cm terminal shoot growth) to the whole canopy of the tree, or at 100, 125, 150 mg・L-1 concentrations two times, at PF and then 4-8 weeks after PF. Pro-Ca treatment generally reduced mean shoot growth, with its effect being proportional to the application rate. Pro-Ca at 400 mg・L-1 significantly reduced the shoot growth by 15-22% compared to the control, while its effect was not significantly different from Pro-Ca 200 mg・L-1. Pro-Ca treatments induced higher occurrence of secondary growth compared to the control. Pro-Ca treatment increased the photosynthetic rate by 5-10% relative to the control, and also increased soluble solid concentration and fruit red color. However, fruit weight was significantly reduced by 400 mg・L-1 Pro-Ca, which was attributable to the greater secondary growth caused Pro-Ca 400 mg・L-1 treatment compared to the control and Pro-Ca 200 mg・L-1 treatment.

1. Awad, M. and A. Jager. 2002. Formation of flavonoids, especially anthocyanin and chlorogenic acid and in ‘Jonagold’ apple skin: influences of growth regulators and fruit maturity. Sci. Hortic. 93:257-266.   

2. Basak, A. and W. Rademacher. 2000. Growth regulation of pome and stone fruit trees by use of prohexadione-Ca. Acta Hortic. 514:41-50.  

3. Basak, A. 2004. Growth and fruiting of ‘Elstar’ apple trees in response to prohexadione calcium depending on the rootstock. Acta Hortic. 653:117-125.  

4. Byers, R.E. and K.S. Yoder. 1999. Prohexadione-Ca inhibits apple, but not peach, tree growth, but has little influence on apple fruit thinning or quality. HortScience 34:1205-1209.  

5. Cho, B.D. 2004. Tree growth management and fruit quality of ‘Fuji’/M9 apple trees treated with prohexadione-calcium. MS Diss., Kyungpook National Univ., Daegu, Korea.  

6. Choi, E.J. B.U. Choi, S.H. Woo, and C.W. Lee. 2012. Effect of growth restraint of white clover (Trifolium repens) as affected by prohexadione-calcium application. Kor. J. Weed Sci. 32:139-143.  

7. Costa, G., E. Sabatini, F. Spinelli, C. Andreotti, C. Bomben, and G. Vizzotto. 2004. Two years of application of prohexadione-Ca on apple: Effect on vegetative and cropping performance, fruit quality, return bloom, and residual effect. Acta Hortic. 653:35-40.  

8. Eccher, T. and G. Granelli. 2006. Fruit quality and yield of different apple cultivars as affected by tree density. Acta Hortic. 712:535-540.  

9. Elfving, D.C., D. Sugar, and D. Faubion. 2002. Pear tree shoot growth patterns in relation to chemical control of vegetative growth with prohexadione-calcium (ApogeeⓇ). Acta Hortic. 596:711-716.  

10. Evans, R.R., J.R. Evans, and W. Rademacher. 1997. Prohexadione- calcium for suppression of vegetative growth in eastern apples. Acta Hortic. 451:663-666.  

11. Evans, J.R., R.R. Evans, C.L. Regusci, and W. Rademacher. 1999. Mode of action, metabolism, and uptake of BAS 125W, prohexadione-calcium. HortScience 34:1200-1201.  

12. Gleen, D.M. and S.S. Miller. 2005. Effects of apogee on growth and whole-canopy photosynthesis in spur ‘Delicious’ apple trees. HortScience 40:397-400.  

13. Granger, R.L. G.L. Rousselle, and A. Charland. 1986. Effect of planting densities, rootstocks and training systems on the spartan apple cultivar. Acta Hortic. 160:105-113.  

14. Greene, D.W. 1999. Tree growth management and fruit quality of apple trees treated with prohexadione-calcium (BAS 125). HortScience 34:1209-1212.  

15. Greene, D.W. 2007. The effect of prohexadione-calcium on fruit set and chemical thinning of apple trees. HortScience 42:1361-1365.  

16. Greene, D.W. 2008. The effect of repeat annual applications of prohexadione-calcium on fruit set, return bloom, and fruit size of apples. HortScience 43:376-379.  

17. Guak, S., D. Neilsen, and N.E. Loony. 2001. Growth, allocation of N and carbohydrate, and stomatal conductance of greenhouse grown apple treated with prohexadione-Ca and gibberellins. J. Hort. Sci. Biotech. 76:746-752.  

18. Guak, S. 2013. Effects of prohexadione-Ca, ethephon, and water stress on growth and productivity of ‘Golden Delicious’/M.9 apple. Kor. J. Hort. Sci. Technol. 31:38-49.  

19. Kang, S.M., J.T. Kim, M. Hamayun, I.C. Hwang, A.L. Khan, Y.H. Kim, J.H. Lee, and I.J. Lee. 2010. Influence of prohexadione- calcium on growth and gibberellins content of Chinese cabbage grown in alpine region of South Korea. Sci. Hort. 125:88-92.  

20. Kim, D.H., J.K. Byun, C. Choi, D.G. Choi, and I.K. Kang. 2008. The effect of calcium chloride, prohexadione-Ca, and Ca-coated paper bagging on reduction of bitter pit in ‘Gamhong’ apple. Kor. J. Hort. Sci. Technol. 26:367-371.  

21. Kim, H.Y., I.J. Lee, M. Hamayun, J.T. Kim, J.G. Won, I.C. Hwang, and K.U. Kim. 2007. Effect of prohexadione calcium on growth components and endogenous gibberellins contents of rice (Oryza sativa L.). J. Agron. Crop. Sci. 193:445-451.  

22. Kim, J.H., J.C. Kim, K.C. Ko, K.R. Kim, and J.C. Lee. 2006. General pomology. Hyangmoonsa Press, Seoul, Korea p. 185-188.  

23. Lee, S.U., E.Y. Nam, S.K. Yun, Y.U. Shin, J.H. Jung, H.K. Kang, and I.K. Yoon. 2010. Effect on shoot growth inhibition by prohexadione-calcium in ‘Sato Nishiki’ sweet cherry. J. Bio-Environ. Cont. 19:387-391.  

24. Mayr, U. and M. Schröder. 2002. Influence of calcium sprays with different concentrations; Spray timing and combinations with prohexadione-Ca on the mineral content in ‘Boskoop’ and ‘Elstar’ apples. Acta Hortic. 594:553-556.  

25. McArtney, S., D. Ferree, J. Schmid, J.D. Obermiller, and A. Green. 2006. Effects of prohexadione-Ca and GA on scarfskin and fruit maturity in apple. HortScience 41:1602-1605.  

26. Medjdoub, R., J. Val, and A. Blanco. 2004. Prohexadione-Ca inhibits vegetative growth of ‘Smoothee Golden Delicious’ apple trees. Sci. Hortic. 101:243-253.  

27. Miller, S.S. 2002. Prohexadione-calcium controls vegetative shoot growth in apple. J. Tree Fruit production 3:11-28.  

28. Privè, J.P., E. Fava, J. Cline, M. Byl, C. Embree, and D. Nichols. 2004. Preliminary results on the efficacy of apple trees treated with the growth retardant pohexadione-calcium (Apogee) in eastern Canada. Acta Hortic. 636:137-144.  

29. Rademacher, W. 1995. Growth retardants: Biochemical features and applications in horticulture. Acta Hortic. 394:57-93.  

30. Sagong, D.H. and T.M. Yoon. 2010. Effects of ringing time on vegetative growth, fruit quality, and return bloom of ‘Fuji’/M.9 apple trees. Kor. J. Hort. Sci. Technol. 28:31-35.  

31. Schupp, J.R., T.L. Robinson, W.P.J. Cowgill, and J.M. Compton. 2003. Effect of water conditioner and surfactants on vegetative growth control and fruit cracking of ‘Empire’ apple caused by prohexadione-calcium. HortScience 36:1205-1209.  

32. Tromp, J. 2005. Metabolic processe, p. 39-54. In: J. Tromp, J.T. Webster, and S.J. Wertheim (eds.). Fundamentals of temperate zone tree fruit production. Backhuys Publishers, Leiden.  

33. Winkler, V.W. 1997. Reduced risk concept for prohexadione- calcium, a vegetative growth control plant growth regulator in apples. Acta Hortic. 451:667-671.  

34. Yoon T.M., H.Y. Park, and D.H. Sagong. 2005. Effect of root pruning on tree growth and fruit quality of ‘Fuji’/M.9 apple trees. Kor. J. Hort. Sci. Technol. 23:275-291.  

35. Yoon, T.M. and D.H. Sagong. 2005. Growth control of ‘Fuji’ apple trees by use of prohexadione-calcium. Kor. J. Hort. Sci. Technol. 23:269-274.